I'd like to point out I'm using a clean Vista installation with Apple drivers (from the Leopard DVD) and I've run Vista (same version, same gfx drivers etc) under Boot Camp on my previous MPB (with integrated DVI output+adapter) on hundreds of different projectors with never a single problem. I can understand Apple does not support MS Vista issues but this seems to be a hardware/driver one.

Do avoid posting about using modded display drivers please: I know they exist but the adaptor should be working with original ones. This is having a serious impact on my job where I do need both Mac&Windows running natively and with external display capabilities, please I'm looking for some feedback from users facing the same problem or someone who had an official answer on this issue from Apple. a mini-displayport-to-VGA adapter which will allow you to connect your Mac. Just 5% of attempts on selected projectors gave me access to the complete resolutions list. How to use Apples Mac mini to turn any screen or desktop into a computer. VGA Mac Adapters: Use one of these adapters if you’re connecting your Mac to a projector or TV using a VGA cable. For a more in-depth guide, visit the Apple adapter support page. No solution came from the adaptor firmware update, still same behavior: connecting the external projector/monitor toggles 640x480 resolution with no more choices available. This is a simple guide to help you determine which apple adapter you need to connect your Mac or Macbook to a projector or TV. I'm facing a very serious issue with MacBook Pro Unibody running MS Vista under Boot Camp: using the Mini DisplayPort to VGA adapter to hook a projector is 95% impossible because the only resolution available is 640x480 or sometimes 800圆00.

Apple mac vga adapter resolution